5.4.2 release notes

* Merged [7673] from rjsparks@nostrum.com:
Made several changes to better handle non-ascii UTF-8 in email messages.
- Used multipart mime when including the original message in an error
message to the secretariat. Modified the way IANA review email is parsed.
Added non-ascii UTF-8 tests to the IANA review email parser and to the
SMTP Exception handling code.
- Changed how edit_mtg() is called, in order to propagate kwargs as kwargs.
Removed repeated @check_permissions.
* Merged [7653] from rcross@amsl.com:
Fixed two issues with proceedings generation.
* Merged in [7644] from rjsparks@nostrum.com:
From rjsparks@nostrum.com:
- Fixed layout issue on schedule editing page in Chrome
- Fixed errant display of text in unscheduled group bar
on the schedule editing page
- Changed the instruction text on the special requests
field of the session request form
From rcross@amsl.com:
- Improved scheduling of non-session items
- Fixed issue with layout of the new notifications page
- Fixed crash on notifications page
-- Henrik Levkowetz <henrik@levkowetz.com> 01 May 2014 02:14:27 +0200